I have FEDERAL SIGNAL "VIPER EXT" 8-LED REPLACEMENT LIGHTHEADS OR LAMP MODULES, MODEL VPXS, PART NUMBER Z8613194A-03, available for sale. These very bright, 8-LED, RED lightheads or lamp modules are in new condition. They have been harvested from a brand new, factory-boxed, 6-module light bar, and are perfect new in every way. They operate on 12 volts DC, measure approximately 4 1/2" x 2", and feature a 2-prong connector as shown in the photo. Please note that by itself, this module is a replacement part to a larger assembly; it does not flash, blink, strobe, or do anything other than light up when 12 volts is applied. Any flashing or alerting actions would be a function of the light bar or other device that this module is used in. Please note that there is no factory box, mounting hardware or documentation included. $39 each lighthead, delivered to your lower-48 address.